# Trigonometry Quick Reference vs Calc Visualizer

The clearest difference is price: Calc Visualizer at Free against Trigonometry Quick Reference's $0.99. Calc Visualizer also leads on iOS requirement (8.0 vs 12.0). Trigonometry Quick Reference's advantage is update cadence (every 8 months vs every 44 months). On ads, in-app purchases and device support there is nothing between them.

Calc Visualizer is free to download; Trigonometry Quick Reference costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Trigonometry Quick Reference ships an update every 8 months, Calc Visualizer every 44 months. The most recent releases landed on October 23, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Trigonometry Quick Reference | Calc Visualizer |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/trigonometry-quick-reference/id689382174/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 8 months** | Every 44 months |
| Monetization | Paid | — |
| Size | 10 MB | 39 MB |
| Requires iOS | 12.0 | **8.0** |
| Devices | iPad | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ventura Educational Systems](https://appshunter.io/developer/371324172) | [Thomas Bretl](https://appshunter.io/developer/553850818) |

## What reviewers say

### Trigonometry Quick Reference

[App page](https://appshunter.io/ios/app/trigonometry-quick-reference/id689382174)

This app offers a concise overview of fundamental trigonometry concepts, including sine, cosine, tangent, and inverse functions. It serves as a quick reference tool for students to review key ideas and test their understanding with quizzes.

**Highlights:** Overview of basic trigonometry concepts, Explanations of sine, cosine, and tangent, Information on inverse functions, Unit circle, ranges, and domains, Quizzes to measure understanding, Detailed explanations on key topics

**Features:** macOS Compatibility

**In-app purchases:** none


### Calc Visualizer

[App page](https://appshunter.io/ios/app/calc-visualizer/id890468108)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Trigonometry Quick Reference free?

Trigonometry Quick Reference costs $0.99, with no in-app purchases.

### Is Calc Visualizer free?

Calc Visualizer is free to download, with no in-app purchases.

### Do Trigonometry Quick Reference or Calc Visualizer have ads?

Neither Trigonometry Quick Reference nor Calc Visualizer shows ads.

### Which is updated more often, Trigonometry Quick Reference or Calc Visualizer?

Trigonometry Quick Reference ships an update every 8 months, and Calc Visualizer every 44 months. Most recently, Trigonometry Quick Reference was updated on October 23, 2026 and Calc Visualizer on October 26, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*